Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.523910][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 43.763919][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 43.884026][ T12] usb 1-1: config 1 has an invalid interface number: 153 but max is 0 [ 43.892341][ T12] usb 1-1: config 1 has no interface number 0 [ 43.898870][ T12] usb 1-1: config 1 interface 153 altsetting 5 has an invalid endpoint with address 0x0, skipping [ 43.910285][ T12] usb 1-1: config 1 interface 153 altsetting 5 endpoint 0x2 has invalid maxpacket 88, setting to 64 [ 43.921512][ T12] usb 1-1: config 1 interface 153 altsetting 5 has an invalid endpoint with address 0x0, skipping [ 43.932508][ T12] usb 1-1: config 1 interface 153 altsetting 5 has an invalid endpoint with address 0x80, skipping [ 43.944786][ T12] usb 1-1: config 1 interface 153 altsetting 5 endpoint 0x5 has invalid maxpacket 112, setting to 64 [ 43.955956][ T12] usb 1-1: config 1 interface 153 has no altsetting 0 [ 44.193998][ T12] usb 1-1: language id specifier not provided by device, defaulting to English [ 44.914195][ T12] usb 1-1: New USB device found, idVendor=2040, idProduct=8265, bcdDevice=fa.2b [ 44.923620][ T12] usb 1-1: New USB device strings: Mfr=9, Product=32, SerialNumber=1 executing program [ 45.255420][ T12] em28xx 1-1:1.153: New device @ 480 Mbps (2040:8265, interface 153, class 153) [ 45.265390][ T12] em28xx 1-1:1.153: Video interface 153 found: [ 45.394001][ T12] em28xx 1-1:1.153: unknown em28xx chip ID (0) [ 45.543943][ T12] em28xx 1-1:1.153: reading from i2c device at 0xa0 failed (error=-5) [ 45.552685][ T12] em28xx 1-1:1.153: board has no eeprom [ 45.663919][ T12] em28xx 1-1:1.153: Identified as Hauppauge WinTV-dualHD DVB (card=99) [ 45.672711][ T12] em28xx 1-1:1.153: Currently, V4L2 is not supported on this model [ 45.804010][ T12] em28xx 1-1:1.153: unknown em28xx chip ID (0) [ 45.953927][ T12] em28xx 1-1:1.153: reading from i2c device at 0xa0 failed (error=-5) [ 45.962366][ T12] em28xx 1-1:1.153: board has no eeprom [ 46.073894][ T12] em28xx 1-1:1.153: Identified as Hauppauge WinTV-dualHD DVB (card=99) [ 46.314579][ T102] em28xx 1-1:1.153: Binding DVB extension [ 46.320414][ T102] em28xx 1-1:1.153: no endpoint for DVB mode and transfer type 0 [ 46.328332][ T102] em28xx 1-1:1.153: failed to pre-allocate USB transfer buffers for DVB. [ 46.337121][ T102] em28xx 1-1:1.153: Binding DVB extension [ 46.347849][ T12] usb 1-1: USB disconnect, device number 2 [ 46.355864][ T12] em28xx 1-1:1.153: Disconnecting em28xx #1 [ 46.362023][ T12] ------------[ cut here ]------------ [ 46.367585][ T12] WARNING: CPU: 0 PID: 12 at kernel/workqueue.c:3031 __flush_work.cold+0x2c/0x36 [ 46.376798][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 46.383485][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.3.0-rc2+ #25 [ 46.391095][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.401259][ T12] Workqueue: usb_hub_wq hub_event [ 46.406632][ T12] Call Trace: [ 46.410061][ T12] dump_stack+0xca/0x13e [ 46.415412][ T12] ? alloc_unbound_pwq.cold+0x40/0x6a [ 46.420990][ T12] panic+0x2a3/0x6da [ 46.425039][ T12] ? add_taint.cold+0x16/0x16 [ 46.430096][ T12] ? __probe_kernel_read+0x188/0x1d0 [ 46.435555][ T12] ? __warn.cold+0x5/0x4a [ 46.439921][ T12] ? __warn+0xe3/0x1e0 [ 46.443982][ T12] ? __flush_work.cold+0x2c/0x36 [ 46.449362][ T12] __warn.cold+0x20/0x4a [ 46.453624][ T12] ? __flush_work.cold+0x2c/0x36 [ 46.458641][ T12] report_bug+0x262/0x2a0 [ 46.463065][ T12] do_error_trap+0x12b/0x1e0 [ 46.467648][ T12] ? __flush_work.cold+0x2c/0x36 [ 46.472897][ T12] do_invalid_op+0x32/0x40 [ 46.477346][ T12] ? __flush_work.cold+0x2c/0x36 [ 46.482397][ T12] invalid_op+0x23/0x30 [ 46.487217][ T12] RIP: 0010:__flush_work.cold+0x2c/0x36 [ 46.492829][ T12] Code: 9a 22 00 48 c7 c7 20 e4 c5 85 e8 d9 3a 0d 00 0f 0b 45 31 e4 e9 98 86 ff ff e8 51 9a 22 00 48 c7 c7 20 e4 c5 85 e8 be 3a 0d 00 <0f> 0b 45 31 e4 e9 7d 86 ff ff e8 36 9a 22 00 48 c7 c7 20 e4 c5 85 [ 46.513384][ T12] RSP: 0018:ffff8881da20f720 EFLAGS: 00010286 [ 46.519559][ T12] RAX: 0000000000000024 RBX: dffffc0000000000 RCX: 0000000000000000 [ 46.527744][ T12] RDX: 0000000000000000 RSI: ffffffff8128a0fd RDI: ffffed103b441ed6 [ 46.535853][ T12] RBP: ffff8881da20f888 R08: 0000000000000024 R09: fffffbfff11acd9a [ 46.544187][ T12] R10: fffffbfff11acd99 R11: ffffffff88d66ccf R12: 0000000000000000 [ 46.552157][ T12] R13: 0000000000000001 R14: ffff8881c6685df8 R15: ffff8881d2a85b78 [ 46.560308][ T12] ? vprintk_func+0x7d/0x113 [ 46.565194][ T12] ? wq_update_unbound_numa+0x710/0x710 [ 46.570830][ T12] ? __dev_printk+0x1db/0x203 [ 46.575504][ T12] ? _dev_info+0xd7/0x109 [ 46.579833][ T12] ? _dev_notice+0x109/0x109 [ 46.584417][ T12] ? lockdep_hardirqs_on+0x379/0x580 [ 46.589762][ T12] ? usb_hcd_flush_endpoint+0x14c/0x2d0 [ 46.595315][ T12] ? usb_disable_endpoint+0x1ba/0x1f0 [ 46.601016][ T12] em28xx_usb_disconnect.cold+0x280/0x2a6 [ 46.606728][ T12] usb_unbind_interface+0x1bd/0x8a0 [ 46.612196][ T12] ? usb_autoresume_device+0x60/0x60 [ 46.617571][ T12] device_release_driver_internal+0x404/0x4c0 [ 46.623819][ T12] bus_remove_device+0x2dc/0x4a0 [ 46.628761][ T12] device_del+0x420/0xb10 [ 46.633084][ T12] ? __device_links_no_driver+0x240/0x240 [ 46.638946][ T12] ? usb_remove_ep_devs+0x3e/0x80 [ 46.644065][ T12] ? remove_intf_ep_devs+0x13f/0x1d0 [ 46.649371][ T12] usb_disable_device+0x211/0x690 [ 46.654391][ T12] usb_disconnect+0x284/0x8d0 [ 46.659170][ T12] hub_event+0x1454/0x3640 [ 46.663585][ T12] ? find_held_lock+0x2d/0x110 [ 46.668336][ T12] ? mark_held_locks+0xe0/0xe0 [ 46.673100][ T12] ? hub_port_debounce+0x260/0x260 [ 46.678220][ T12] process_one_work+0x92b/0x1530 [ 46.683416][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 46.688784][ T12] ? do_raw_spin_lock+0x11a/0x280 [ 46.693819][ T12] worker_thread+0x7ab/0xe20 [ 46.698475][ T12] ? process_one_work+0x1530/0x1530 [ 46.703819][ T12] kthread+0x318/0x420 [ 46.707907][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 46.713320][ T12] ret_from_fork+0x24/0x30 [ 46.718361][ T12] Kernel Offset: disabled [ 46.722823][ T12] Rebooting in 86400 seconds..